- 快速公路 kuàisùgōnglù highwayhighway; freeway; thruway
- 快速记忆法 kuàisùjìyìfǎ mnemonicsa technique or method used for rapid memorization
- 快速动眼期 kuàisùdòngyǎnqī REM sleeprapid eye movement sleep; the stage of sleep characterized by rapid movement of the eyes and dreaming
- 快速反应部队 kuàisùfǎnyìngbùduì rapid reaction forceAn elite military unit with high mobility and advanced technology, trained to respond quickly to terrorist activities and emergencies.
- 快速帆船 kuàisùfānchuán clipperA fast sailing ship with a narrow hull and many large sails used for long ocean voyages in the 19th century
- 快速筛检 kuàisùshāijiǎn rapid diagnostic testrapid diagnostic test (RDT) used for medical screening; specifically used to detect antigens or antibodies quickly
- 快速以太网络 kuàisùyǐtàiwǎngluò Fast EthernetA local area network technology that provides data transfer rates of 100 megabits per second.
- 快速诊断测试 kuàisùzhěnduàncèshì rapid diagnostic testa medical diagnostic test that is quick and easy to perform; often abbreviated as RDT
- 快速路 kuàisùlù expresswayA high-speed road in a city designed for motor vehicles; its speed limits and standards are higher than ordinary roads but lower than a full [[高速公路|高速公路|gao1 su4 gong1 lu4]].
- 快速通关 kuàisùtōngguān speedrunto complete a video game or a specific level as quickly as possible
- 快速道 kuàisùdào expresswayhigh-speed road or arterial highway; an abbreviated form for a thoroughfare designed for fast-moving traffic
- 快速道路 kuàisùdàolù expresswayA highway for fast motor traffic with speed limits typically higher than regular roads but lower than freeways
- 快速阅读 kuàisùyuèdú speed readingspeed reading; rapid reading
- 快速面 kuàisùmiàn instant noodlesInstant noodles that are prepared by adding hot water or boiling briefly; commonly used in Mainland China.